ABB circuit breaker bus communication manual Vol-9 (MOE+AUX-E)
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58 Technical Application Papers Bus communication with ABB circuit-breakers Annex E: AUX-E auxiliary contacts and MOE-E motor operator For Tmax circuit-breakers type T4, T5 and T6 some special accessories are needed: - AUX-E auxiliary contacts in electronic version for supervision only; - motor operator with electronic interface type MOE-E for remote control too. E.1 AUX-E auxiliary contacts in electronic version Through the AUX-E auxiliary contacts, the micropro- cessor-based releases type PR222DS/PD, PR223EF and PR223DS detect the circuit-breaker state (open, closed, tripped) and make available such information for the remote supervision system, by communicating with it through the Modbus network (see Figure E.2). The AUX-E contacts make available the information about the circuit-breaker state also on the signaling circuits of the plant through the contacts SQ and SY (see Figure E.2); in this way it is possible to obtain a redundancy of the CB state signals. Figure E.1: Auxiliary contact module AUX-E mounted on Tmax T5 Figure E.2: Wiring diagram of AUX-E contacts connected to PR222DS/PD Note: SQ: Contact for the electrical signaling of circuit-breaker open/closed SY: Contact for the electrical signaling of circuit-breaker open (tripped position) Electrical characteristics of SQ and SY contacts: Rated voltage: 24…350 V Rated current: 0…100 mAmps Max voltage: 400 V Max continuous current: 120 mAmps Max current (for 100 msecs): 300 mAmps Digital signals (open/closed, tripped) PR222DS/PD Main circuit-breaker TI/N TI/L3 TI/L2 TI/L1 Q AUXE Remote supervision system Signaling circuits LDSQ LDSY – + 1 2 3 4 5 6 7 8 Modbus Cable Terminals 1 and 2 of X3 rear connector Auxiliary power supply Vaux (A) (B) X3 24V + - XB SQ SY X7 X7 X7 X7 XA7 XA7 XA7 XA7 1 5 2 4 1 5 2 4 Annex E: AUX-E auxiliary contacts and MOE-E motor operator
Transcript of ABB circuit breaker bus communication manual Vol-9 (MOE+AUX-E)
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Technical Application Papers
Bus communication with ABB circuit-breakers
Annex E: AUX-E auxiliary contacts and MOE-E motor operatorFor Tmax circuit-breakers type T4, T5 and T6 some special accessories are needed:
- AUX-E auxiliary contacts in electronic version for supervision only;
- motor operator with electronic interface type MOE-E for remote control too.
E.1 AUX-E auxiliary contacts in electronic version
Through the AUX-E auxiliary contacts, the micropro-cessor-based releases type PR222DS/PD, PR223EF and PR223DS detect the circuit-breaker state (open, closed, tripped) and make available such information for the remote supervision system, by communicating with it through the Modbus network (see Figure E.2).The AUX-E contacts make available the information about the circuit-breaker state also on the signaling circuits of
the plant through the contacts SQ and SY (see Figure E.2); in this way it is possible to obtain a redundancy of the CB state signals.
Figure E.1: Auxiliary contact module AUX-E mounted on Tmax T5
Figure E.2: Wiring diagram of AUX-E contacts connected to PR222DS/PD
Note:SQ: Contact for the electrical signaling of circuit-breaker open/closedSY: Contact for the electrical signaling of circuit-breaker open (tripped position)
Electrical characteristics of SQ and SY contacts:Rated voltage: 24350 VRated current: 0100 mAmpsMax voltage: 400 VMax continuous current: 120 mAmpsMax current (for 100 msecs): 300 mAmps
Digital signals(open/closed, tripped)P
R22
2DS
/PD
Main circuit-breaker
TI/N
TI/L3
TI/L2
TI/L1
Q
AUXE
Remotesupervision system
Signalingcircuits
LDSQ LDSY
+
1
2
3
4
5
6
7
8
Modbus Cable
Terminals 1 and 2of X3 rear connector
Auxiliary powersupply Vaux
(A)
(B)
X3
24V+
-
XB
SQ
SY
X7
X7
X7
X7
XA7
XA7
XA7
XA7
1
5
2
4
1
5
2
4
Annex E
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auxiliary contacts and
MO
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mo
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59Bus communication with ABB circuit-breakers
E.2 Stored energy motor operator MOE-E
Tmax moulded-case circuit-breakers series T4, T5 and T6 can carry out opening and closing commands from remote control when they are equipped with MOE-E motor operator and AUX-E auxiliary contacts in elec-tronic version (provided by default together with MOE-E). MOE-E motor operator is constituted, besides the real motor operating mechanism, by an electronic actuation unit, which converts the digital signals coming from the remote supervision system into their equivalent power signals necessary to perform the mechanical opening and closing operations of the circuit-breaker. The digital
signals coming from the supervision system are acquired by the trip unit and sent to the motor operator according to the scheme of Figure E.3.AUX-E auxiliary contacts communicate to the trip unit the circuit-breaker state (open/closed/tripped) and according to this information, the trip unit shall carry out or not the opening, closing and reset commands it receives by the supervision system.In this way, the trip unit consents only to the actuation of the commands which are compatible with the real state of the circuit-breaker (for instance it shall not consent to a closing command when the circuit-breaker is in the tripped state).
Figure E.3: Operating principle of MOE-E and AUX-E modules
Annex E
: AU
X-E
auxiliary contacts and
MO
E-E
mo
tor o
perato
r
MOE-E
MOE-E
Circuit-breaker
Modbus
AUX-E
AUX-E
Trip-unit
Trip-unit
kan
